Biology
Biology
12th Edition
ISBN: 9781260494570
Author: Raven, Peter
Publisher: MCGRAW-HILL HIGHER EDUCATION
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Chapter 43, Problem 3U

All sensory receptors are able to initiate nerve impulses by opening or closing

a. voltage-gated ion channels.

b. exteroceptors.

c. interoceptors.

d. stimulus-gated ion channels.

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Molecular Biology Please help with question. Thank you You are studying the expression of the lac operon. You have isolated mutants as described below. In the absence of glucose, explain/describe what would happen, for each mutant, to the expression of the lac operon when you add lactose AND what would happen when the bacteria has used up all of the lactose (if the mutant is able to use lactose).1. Mutations in the lac repressor gene that would prevent the binding of lactose2. Mutations in the lac repressor gene that would prevent release of lactose once lactose hadbound3. Normally the lac repressor gene is located next to (a few hundred base pairs) and upstreamfrom the lac operon. Mutations in the lac repressor gene that move the lac repressor gene 100,000base pairs downstream.4. Mutations in the lac operator that would prevent binding of lac repressor
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true or false, the reason geckos can walk on walls is hydrogen bonding between their foot pads and the moisture on the wall.
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